দুটি বিন্দু চার্জ `+6q এবং -8q` একটি সমবাহু ত্রিভুজের B এবং C শীর্ষবিন্দুতে স্থাপন করা হয়

Two point charges +6q and -8q are placed at the vertices B and C of an equilateral triangle ABC of side a. Obtain an expression for magnitude and direction of resultant electric field at the vertex A due to these two charges.

If 2p+3q=18 and 2p-q=2, then 2p+q=?( a) 6 (b) 7 (c) 10 (d) 20

Match List I with list II and select the correct answer: List I List II (a , b as given in Euclidean algorithm (Values of q and r ) a=b q+r ) a=-112 , b=-7 q=-13 , r=1 B. a=118 , b=-9 q=14 , r=3 C. a=-109 , b=6 q=-19 , r=5 D. a=115 , b=8 q=16 , r=0 A B C D A B C D (a) 3 1 4 2 (b) 3 2 4 1 (c) 4 1 3 2 (d) 4 2 3 1

In the figure, A , B , C and D are four concentric spheres of radius a , 2a , 3a and 4a and contain, charges +3q , +6q , -9q and +12q respectively. In the beginning switches S_(1) and S_(2) are open. After earthing the sphere C , Deltaq_(1) amount of charge flows from the sphere C to the earth. If the sphere B is also earthed, then Deltaq_(2) amount of charge flows from the sphere B to the earth, find the value of (|Deltaq_(1)|)/(|deltaq_(2)|)

In Fig. 4.136, A C B A P Q . If B C=8c m , P Q=4c m , B A=6. 5 c m and A P=2. 8 c m , find C A and A Q . (FIGURE)

In Fig. 4.88, A C B ~ A P Qdot If B C=8c m , P Q=4c m , B A=6. 5 c m , A P=2. 8 c m , find C A and A Q . (FIGURE)

If origin is the centroid of the triangle with vertices P(3a, 3, 6), Q (-4, 2b, -8) and R(8, 12, 2c), then the value of a, b, and c are

Let P=[(1, 0, 0),(3, 1, 0),(9, 3, 1)]Q=[q_(ij)] and Q=P^5+I_3 then (q_21+q_31)/q_32 is equal to (A) 12 (B) 8 (C) 10 (D) 20

If G(3, -5, r) is centroid of triangle ABC where A(7, - 8, 1), B(p, q, 5) and C(q + 1, 5p, 0) are vertices of a triangle then values of p, q, r are respectively ...